package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.*;
import com.itheima.reggie.mapper.OrderMapper;
import com.itheima.reggie.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {

    @Autowired
   private ShoppingCartService shoppingCartService;

    @Autowired
    private OrderDetailService orderDetailService;
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;
    @Override
    public void submit(Orders orders) {
        Long userId = BaseContext.getCurrentId();
        LambdaQueryWrapper<ShoppingCart> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> shoppingCarts = shoppingCartService.list(queryWrapper);
        if(shoppingCarts==null||shoppingCarts.size()==0){
            throw new CustomException("购物车为空，不能下单");
        }
        User user = userService.getById(userId);
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if(addressBook==null){
            throw new CustomException("地址信息有误，无法下单");
        }
        Long orderId=IdWorker.getId();
        AtomicInteger amount=new AtomicInteger(0);
      List<OrderDetail> orderDetails= shoppingCarts.stream().map((item)->{
          OrderDetail orderDetail=new OrderDetail();
          orderDetail.setOrderId(orderId);
          orderDetail.setNumber(item.getNumber());
          orderDetail.setDishFlavor(item.getDishFlavor());
          orderDetail.setDishId(item.getDishId());
          orderDetail.setSetmealId(item.getSetmealId());
          orderDetail.setName(item.getName());
          orderDetail.setImage(item.getImage());
          orderDetail.setAmount(item.getAmount());
          amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
          return orderDetail;
        }).collect(Collectors.toList());


        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress(
                (addressBook.getProvinceName()==null?"":addressBook.getProvinceName())
                 +(addressBook.getCityName()==null?"":addressBook.getCityName())
                +(addressBook.getDistrictName()==null?"":addressBook.getDistrictName())
                +(addressBook.getDetail())==null?"":addressBook.getDetail());
        this.save(orders);
        orderDetailService.saveBatch(orderDetails);

        shoppingCartService.remove(queryWrapper);

    }
}
